Automatic converging device for two paths of medicine plates

By combining a blister pack robot and a blister pack conveyor belt, the problems of jamming and downtime during the blister pack confluence process are solved, achieving efficient, stable, and flexible automated processing of blister packs, suitable for enterprises of all sizes.

CN224000579UActive Publication Date: 2026-03-17LEFUSI HEALTH IND CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-19
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing technologies suffer from problems such as jamming, deceleration, reversal, and frequent shutdowns during the blister pack assembly process, making it difficult to control costs while ensuring efficient operation, especially in small and medium-sized enterprises.

Method used

The design combines a blister pack robot and a blister pack conveyor belt, including a main plate, gripping components, a drive unit, and a conductive device. It uses a combination of a vacuum pump and a vacuum suction nozzle for efficient gripping, and combines a limit component and an adjusting cylinder to ensure the linear movement of the blister pack during the conveying process. The conductive device stabilizes the power transmission and realizes the automated convergence of the blister packs.

Benefits of technology

It improves the efficiency of automated processing of blister packs, ensures the smooth flow of blister packs on the production line, reduces the frequency of equipment downtime due to material shortages, is suitable for production enterprises of different sizes, and reduces costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of medicine packaging production equipment, in particular to a two-way medicine plate automatic converging device which comprises a medicine plate mechanical arm and a medicine plate conveying belt, the medicine plate mechanical arm is located above the medicine plate conveying belt, and the medicine plate mechanical arm comprises a main disc, a grabbing assembly, a driving device and a conductive device. The driving device comprises a main driving motor and a sub-driving motor, the output end of the main driving motor is connected with the main disc, a motor frame is installed on the main disc, through combination of a vacuum air pump and a vacuum suction nozzle pipe, it is ensured that multiple medicine plates are grabbed every time, and the working efficiency is improved; at least three vacuum suction nozzle pipes are installed on each vacuum air pump and are arranged into a triangular structure, the grabbing efficiency is further improved, the adjusting air cylinder has high flexibility and can push the medicine plates to be converged into a straight line, and the limiting assembly ensures that the medicine plates keep linear motion in the conveying process through the combination of an adjusting frame, a telescopic pipe and a limiting guardrail.
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Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical packaging production equipment, specifically a two-way automatic confluence device for pharmaceutical packaging plates. Background Technology

[0002] In pharmaceutical packaging production lines, the efficient conveying and confluence of blister packs is crucial for ensuring production continuity and stability. Especially after fully automated blister packaging machines, blister packs typically need to be converged from two conveyor lines into a straight line for further processing by downstream equipment. The two existing solutions each have their own advantages and disadvantages in practical applications, making it difficult to fully meet the requirements of high efficiency and stability.

[0003] Existing technical problems

[0004] When the blister packs produced by the fully automatic blister packaging machine are placed on the blister pack conveyor belt, it is necessary to converge the blister packs on the two conveyor belts into a straight line. The specific technical problem is:

[0005] Improving the continuity and stability of the production line requires quickly and stably converging four medicine plates arranged in a similar triangular pattern into a straight line.

[0006] Avoiding jams and downtime: During the convergence process, the blister packs are affected by the combined forces of the conveyor belt and the guardrail, which can easily lead to deceleration, change of direction and jamming, resulting in frequent equipment downtime due to material shortages, which seriously affects production efficiency and product quality.

[0007] Cost control: It is necessary to ensure efficient operation while minimizing costs to accommodate production enterprises of different sizes and budgets.

[0008] Existing technical solutions and their limitations

[0009] Currently, the pharmaceutical industry mainly has two solutions for the convergence of two drug versions:

[0010] Option 1 (Low Cost)

[0011] Solution Description: Use a Y-shaped guardrail, wider at the front (exactly the width of two medicine trays) and narrower at the back (exactly the width of one medicine tray). The guardrail on the medicine tray conveyor belt gradually narrows, allowing the four medicine trays in two similar triangular patterns to gradually converge into a straight line.

[0012] advantage:

[0013] Low cost, suitable for low-speed production lines.

[0014] shortcoming:

[0015] The medicine plate is subjected to forces in two directions on the conveyor belt (the forward force of the conveyor belt and the squeezing force of the guardrail), which causes the medicine plate to decelerate and change direction.

[0016] Where the guardrail narrows, the blister packs are easily squeezed and frequently jammed together, causing the fully automatic blister packaging machine and the downstream equipment linkage line to frequently stop due to material shortages, seriously affecting production efficiency and product quality.

[0017] The second high-cost solution

[0018] Solution Description: A gantry robot is used to directly pick up two medicine trays arranged in a similar triangular shape from the medicine tray conveyor belt and place them directly at the inlet of the rear equipment to form a straight line.

[0019] advantage:

[0020] Suitable for medium- and high-speed production lines, it can quickly and stably complete the assembly operation of pharmaceutical plates.

[0021] shortcoming:

[0022] It is costly to implement and is not suitable for all businesses, especially small and medium-sized enterprises. Utility Model Content

[0023] (a) Technical problems to be solved

[0024] To address the shortcomings of existing technologies, this utility model provides a two-channel automatic drug delivery system.

[0025] (II) Technical Solution

[0026] To achieve the above objectives, this utility model provides the following technical solution: A two-channel automatic liner confluence device of this utility model includes a liner robot and a liner conveyor belt. The liner robot is located above the liner conveyor belt. The liner robot includes a main plate, a gripping component, a driving device, and a conductive device. The driving device includes a main drive motor and a sub-drive motor. The output end of the main drive motor is connected to the main plate. A motor frame is mounted on the main plate. The sub-drive motor is mounted on the motor frame. The output end of the sub-drive motor passes through the main plate and is connected to the gripping component. The gripping component and the sub-drive motor are electrically connected to the conductive device, which is used to conduct current. The liner conveyor belt includes a belt conveyor, a limiting component, and an adjusting cylinder. The limiting component is installed at the lower end of the belt conveyor, and the adjusting cylinder is installed at the upper end of the belt conveyor. A pneumatic guardrail is installed at the output end of the adjusting cylinder. The limiting component is used for limiting linear conveying.

[0027] Preferably, the gripping component includes a controller, a vacuum pump, and a vacuum nozzle tube. The output end of the sub-drive motor is connected to the controller. The controller has a cylindrical structure. The vacuum pump is mounted around the controller, and the vacuum nozzle tube is mounted on the vacuum pump.

[0028] More preferably, the conductive device includes a main conductive ring, a circuit switch, a conductive rod, and a sub-conductive ring. The circuit switch is fixedly mounted on the motor frame and is slidably connected to the main conductive ring via a conductive slider. The sub-drive motor is electrically connected to the circuit switch. The circuit switch is provided with a conductive rod that passes through the main disk. The sub-conductive ring is mounted on the end of the conductive rod. The tail end of the controller is slidably connected to the sub-conductive ring via a conductive slider.

[0029] Preferably, at least three vacuum pumps are arranged around the controller, and each vacuum pump is equipped with at least three vacuum nozzles arranged in a triangular pattern.

[0030] Preferably, the limiting component includes an adjusting frame, a telescopic tube, and a limiting guardrail. The rear end of the limiting guardrail is provided with a threaded adjusting rod, which is inserted into the telescopic tube. A limiting nut is fitted on the threaded adjusting rod, and the limiting nut is connected to the outer wall of the telescopic tube through a threaded structure.

[0031] More preferably, the belt conveyor is equipped with an optical fiber probe, which is located between the pneumatic guardrail and the limit guardrail.

[0032] (III) Beneficial Effects

[0033] Compared with the prior art, this utility model provides a two-channel automatic drug delivery system, which has the following advantages:

[0034] High-efficiency crawling

[0035] Vacuum pump and vacuum nozzle combination: By combining the vacuum pump and vacuum nozzle, multiple tablets can be grabbed at a time, improving work efficiency. The vacuum pump is mounted around the controller, and each vacuum pump is equipped with at least three vacuum nozzles arranged in a triangular structure, which further improves the grabbing efficiency.

[0036] Precise control

[0037] Intelligent control system: Through the cooperation of controllers and sensors, the timing of vacuum breaking of each vacuum nozzle tube is ensured, and the fiber optic probe monitors the position and status of the medicine plate in real time to ensure the accuracy of the medicine plate during the delivery process.

[0038] Flexible adjustment

[0039] Adjusting cylinder: The adjusting cylinder has high flexibility and can push the medicine blister packs into a straight line. The limiting component, through the combination of the adjusting frame, telescopic tube and limiting guardrail, ensures that the medicine blister packs maintain linear movement during the conveying process.

[0040] Reliable power transmission

[0041] Conductive device: The conductive device includes a main conductive ring, a circuit switch, a conductive rod, and a sub-conductive ring, which ensures stable current transmission and guarantees the normal operation of the gripping component.

[0042] These designs collectively constitute a highly efficient, reliable, and flexible automated blister pack handling system, suitable for the automated processing of blister packs in pharmaceutical packaging production lines. Through proper selection and optimized design, this system can significantly improve the automation level and work efficiency of the production line. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0044] Figure 2 This is a schematic diagram of the structure of the medicine blister pack robot of this utility model;

[0045] Figure 3 This is a schematic diagram of the structure of the blister pack conveyor belt of this utility model;

[0046] Figure 4 This is a schematic diagram of the sub-conductive ring structure of this utility model;

[0047] In the diagram: 1. Blend conveyor belt; 2. Blend robot; 3. Main plate; 4. Main drive motor; 5. Controller; 6. Vacuum pump; 7. Vacuum suction nozzle; 8. Motor frame; 9. Circuit switch; 10. Sub-drive motor; 11. Main conductive ring; 12. Fiber optic probe; 13. Conductive rod; 14. Sub-conductive ring; 15. Adjusting cylinder; 16. Pneumatic guardrail; 17. Adjusting frame; 18. Telescopic tube; 19. Limit guardrail; 20. Threaded adjusting rod; 21. Limit nut; 22. Belt conveyor device. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] Please see Figure 1-4This utility model discloses a two-way automatic medicine plate confluence device, including a medicine plate robot 2 and a medicine plate conveyor belt 1. The medicine plate robot 2 is located above the medicine plate conveyor belt 1. The medicine plate robot 2 includes a main plate 3, a gripping component, a driving device, and a conductive device. The driving device includes a main drive motor 4 and a sub-drive motor 10. The output end of the main drive motor 4 is connected to the main plate 3. A motor frame 8 is installed on the main plate 3. The sub-drive motor 10 is installed on the motor frame 8. The output end of the sub-drive motor 10 passes through the main plate 3 and is connected to the gripping component. The gripping component and the sub-drive motor 10 are electrically connected to the conductive device, which is used to conduct current. The medicine plate conveyor belt 1 includes a belt conveyor 22, a limiting component, and an adjusting cylinder 15. The limiting component is installed at the lower end of the belt conveyor 22, and the adjusting cylinder 15 is installed at the upper end of the belt conveyor 22. A pneumatic guardrail 16 is installed at the output end of the adjusting cylinder 15. The limiting component is used for limiting the linear conveying.

[0050] This two-way automatic blister pack confluence device for pharmaceutical packaging production lines aims to achieve efficient conveying, gripping, and confluence of blister packs. The device mainly consists of a blister pack robot 2 and a blister pack conveyor belt 1, ensuring smooth flow of blister packs on the production line through precise control and coordinated operation.

[0051] Working principle of the blister pack robot 2

[0052] The blister pack robot 2 is located above the blister pack conveyor belt 1 and is responsible for grabbing blister packs from the conveyor belt and moving them to a designated position. Its core components include the main disk 3, the gripping assembly, the drive unit, and the conductive device.

[0053] Main plate 3: Main plate 3 is the main support structure of the medicine plate robot 2, and it is driven to rotate by the main drive motor 4.

[0054] Gripping Component: The gripping component is installed below the main disk 3 and is driven by the sub-drive motor 10 in the opposite direction to the movement of the main disk 3 to complete the gripping and releasing action of the medicine plate.

[0055] Drive unit: includes main drive motor 4 and sub-drive motor 10. Main drive motor 4 drives main disk 3 to rotate, while sub-drive motor 10 controls the gripping component to move in the opposite direction to main disk 3.

[0056] Conductive device: The conductive device is used to conduct current and ensure power transmission between the gripping component and the control system.

[0057] Working principle of blister pack conveyor belt 1

[0058] The blister pack conveyor belt 1 is responsible for transporting blister packs from one workstation to another. Its main components include belt conveyor device 22, limit component and adjusting cylinder 15.

[0059] Belt conveyor device 22: It adopts the traditional belt drive method to transport the medicine plate from the input end to the output end.

[0060] Limiting component: The limiting component is installed at the lower end of the belt conveyor 22 to ensure that the medicine plate maintains a straight movement during the conveying process and avoids deviation.

[0061] Adjusting cylinder 15: The adjusting cylinder 15 is installed at the upper end of the belt conveyor 22. It positions and adjusts the medicine plate through the pneumatic guardrail 16 to ensure the stability of the medicine plate during the conveying process.

[0062] Working principles of various preferred technical solutions

[0063] Optimal design of crawling components

[0064] Controller 5: Controller 5 is a cylindrical structure that integrates circuitry and a control system. It is responsible for receiving instructions and controlling the actions of the gripping components.

[0065] Vacuum pump 6: Vacuum pump 6 is mounted around controller 5 to provide vacuum suction force, enabling vacuum nozzle tube 7 to firmly adhere to the medicine plate.

[0066] Vacuum suction tube 7: Vacuum suction tube 7 is installed on vacuum pump 6, usually arranged in a triangular pattern to ensure that multiple blister packs are picked up each time, thus improving work efficiency.

[0067] Preferred design of conductive device

[0068] Main conductive ring 11: The main conductive ring 11 is slidably connected to the circuit switch 9 through a conductive slider to ensure stable current transmission.

[0069] Circuit switch 9: Circuit switch 9 is fixedly installed on motor frame 8 and is slidably connected to main conductive ring 11 through conductive slider to control the current flow.

[0070] Conductive rod 13: Conductive rod 13 passes through the main disk 3 and transmits current from the circuit switch 9 to the sub-conductive ring 14.

[0071] Sub-conductive ring 14: The sub-conductive ring 14 is installed at the end of the conductive rod 13 and is slidably connected to the tail end of the controller 5 through a conductive slider to ensure that the controller 5 can obtain a stable power supply.

[0072] Preferred design of vacuum pump 6

[0073] Multi-point surround installation: There are at least three vacuum pumps 6 arranged around the perimeter, and each vacuum pump 6 is equipped with at least three vacuum suction tubes 7, which are arranged in a triangular structure to ensure that multiple medicine plates are picked up each time, thereby improving work efficiency.

[0074] Preferred design of limit components

[0075] Adjustment frame 17: Adjustment frame 17 is used to install telescopic tube 18 and limit guardrail 19 to ensure the flexibility of the limit assembly.

[0076] Telescopic tube 18: A limiting guardrail 19 is inserted into the telescopic tube 18. The rear end of the limiting guardrail 19 is provided with a threaded adjustment rod 20, which is adjusted by the limiting nut 21 to ensure that the limiting component can adapt to different sizes of blister packs.

[0077] Limit guardrail 19: The limit guardrail 19 is finely adjusted by the threaded adjusting rod 20 and the limit nut 21 to ensure that the medicine plate maintains linear movement during the conveying process.

[0078] Preferred design of fiber optic probe 12

[0079] Fiber optic probe 12: The fiber optic probe 12 is installed on the belt conveyor 22, located between the pneumatic guardrail 16 and the limit guardrail 19, and is used to detect the position and status of the medicine plate to ensure the accuracy of the medicine plate during the conveying process.

[0080] In this technical solution, the main drive motor 4 and the main conductive ring 11 can be configured with a frame for support and installation.

[0081] Detailed Workflow

[0082] The following is a detailed workflow of the two-channel automatic drug delivery system described in the patent document:

[0083] Drug plate input stage

[0084] Medicine blister punching: Medicine blister punching mechanism is usually configured on the side of medicine blister robot 2 and medicine blister conveyor belt 1. The medicine blister punching mechanism adopts relevant equipment with mature existing application technology to cut the medicine blister into a triangular shape that is compatible with vacuum suction tube 7.

[0085] Drug blister grasping stage

[0086] The medicine plate robot 2 is in place: The medicine plate robot 2 moves above the medicine plate according to the preset program, ready to perform the grasping operation.

[0087] Start vacuum pump 6: When vacuum pump 6 is started, it generates a vacuum suction force, which enables the vacuum suction tube 7 to firmly adhere to the medicine plate.

[0088] Grabbing the medicine plate: The sub-drive motor 10 drives the gripping component to descend, the vacuum suction tube 7 contacts the medicine plate and adsorbs the medicine plate, and then the gripping component rises to lift the medicine plate from the belt conveyor 22.

[0089] Drug pack confluence stage

[0090] The movement of the blister pack robot 2: The blister pack robot 2 moves the gripped blister pack to the designated confluence position according to the preset program.

[0091] Release of the medicine plate: After the medicine plate robot 2 reaches the target position, it stops the operation of the vacuum pump 6, the vacuum suction tube 7 loses its suction force, and the medicine plate falls off naturally under the action of gravity or is blown off by a slight positive pressure, thus completing the release of the medicine plate.

[0092] Merging of medicine blister packs: After the medicine blister packs fall onto the belt conveyor 22, the adjusting cylinder 15 pushes the pneumatic guardrail 16 to merge the medicine blister packs into a straight line. Then the pneumatic guardrail 16 returns to its original position to wait for the next batch of medicine blister packs to fall onto the belt conveyor 22 and repeat the above operation.

[0093] Control and Feedback

[0094] Each electrical component in this technical solution can be connected to the central controller 5 and controlled by programming through the central controller 5.

[0095] Sensor detection: Fiber optic probes 12 are installed at key parts of the pneumatic guardrail 16 and the medicine blister conveyor belt 1 to monitor the status of the medicine blister in real time and ensure the straight conveying of the medicine blister each time. When the fiber optic probe 12 detects that the medicine blister is blocked between the pneumatic guardrail 16 and the limit guardrail 19, it sends a signal to the central controller 5 to control the machine to stop working.

[0096] Program control: The entire gripping and releasing process of the vacuum pump 6 is precisely controlled by the controller 5 (programmable logic PLC controller 5) or a dedicated control system to ensure that each action is executed in a predetermined time and sequence.

[0097] Maintenance and Adjustment

[0098] Limit component adjustment: According to actual production needs, the threaded adjustment rod 20 and limit nut 21 of the limit guardrail 19 are adjusted to ensure that the limit component can adapt to different sizes of medicine plates.

[0099] Vacuum pump 6 inspection: Regularly check the working status of vacuum pump 6 to ensure that it can provide sufficient vacuum suction force and prevent the medicine plate from falling off due to insufficient vacuum.

[0100] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-way drug version automatic merging device, characterized in that, The utility model provides a medicine plate conveying device, including medicine plate manipulator (2) and medicine plate conveying belt (1), medicine plate manipulator (2) is located the top of medicine plate conveying belt (1), medicine plate manipulator (2) includes main disc (3), grab component, drive arrangement and conductive device, drive arrangement includes main drive motor (4) and sub drive motor (10), the output of main drive motor (4) is connected with main disc (3), motor bracket (8) is installed on main disc (3), sub drive motor (10) is installed on motor bracket (8), the output of sub drive motor (10) is connected with grab component through main disc (3), grab component and sub drive motor (10) are electrically connected with conductive device, and the conductive device is used for conducting current, and medicine plate conveying belt (1) includes belt conveying device (22), limiting component and adjusting cylinder (15), limiting component is installed at the lower end of belt conveying device (22), adjusting cylinder (15) is installed at the upper end of belt conveying device (22), and the output of adjusting cylinder (15) is installed with pneumatic guardrail (16), and limiting component is used for the limiting of linear conveying.

2. The automatic merging device of claim 1, wherein, The utility model provides a medicine plate conveying device, including medicine plate manipulator (2) and medicine plate conveying belt (1), medicine plate manipulator (2) is located the top of medicine plate conveying belt (1), medicine plate manipulator (2) includes main disc (3), grab component, drive arrangement and conductive device, drive arrangement includes main drive motor (4) and sub drive motor (10), the output of main drive motor (4) is connected with main disc (3), motor bracket (8) is installed on main disc (3), sub drive motor (10) is installed on motor bracket (8), the output of sub drive motor (10) is connected with grab component through main disc (3), grab component and sub drive motor (10) are electrically connected with conductive device, and the conductive device is used for conducting current, and medicine plate conveying belt (1) includes belt conveying device (22), limiting component and adjusting cylinder (15), limiting component is installed at the lower end of belt conveying device (22), adjusting cylinder (15) is installed at the upper end of belt conveying device (22), and the output of adjusting cylinder (15) is installed with pneumatic guardrail (16), and limiting component is used for the limiting of linear conveying.

3. The automatic merging device of claim 2, wherein, The utility model provides a medicine plate conveying device, including medicine plate manipulator (2) and medicine plate conveying belt (1), medicine plate manipulator (2) is located the top of medicine plate conveying belt (1), medicine plate manipulator (2) includes main disc (3), grab component, drive arrangement and conductive device, drive arrangement includes main drive motor (4) and sub drive motor (10), the output of main drive motor (4) is connected with main disc (3), motor bracket (8) is installed on main disc (3), sub drive motor (10) is installed on motor bracket (8), the output of sub drive motor (10) is connected with grab component through main disc (3), grab component and sub drive motor (10) are electrically connected with conductive device, and the conductive device is used for conducting current, and medicine plate conveying belt (1) includes belt conveying device (22), limiting component and adjusting cylinder (15), limiting component is installed at the lower end of belt conveying device (22), adjusting cylinder (15) is installed at the upper end of belt conveying device (22), and the output of adjusting cylinder (15) is installed with pneumatic guardrail (16), and limiting component is used for the limiting of linear conveying.

4. The automatic merging device of claim 3, wherein, The utility model provides a medicine plate conveying device, including medicine plate manipulator (2) and medicine plate conveying belt (1), medicine plate manipulator (2) is located the top of medicine plate conveying belt (1), medicine plate manipulator (2) includes main disc (3), grab component, drive arrangement and conductive device, drive arrangement includes main drive motor (4) and sub drive motor (10), the output of main drive motor (4) is connected with main disc (3), motor bracket (8) is installed on main disc (3), sub drive motor (10) is installed on motor bracket (8), the output of sub drive motor (10) is connected with grab component through main disc (3), grab component and sub drive motor (10) are electrically connected with conductive device, and the conductive device is used for conducting current, and medicine plate conveying belt (1) includes belt conveying device (22), limiting component and adjusting cylinder (15), limiting component is installed at the lower end of belt conveying device (22), adjusting cylinder (15) is installed at the upper end of belt conveying device (22), and the output of adjusting cylinder (15) is installed with pneumatic guardrail (16), and limiting component is used for the limiting of linear conveying.

5. The automatic two-way drug version merging device according to claim 4, characterized in that, The utility model provides a medicine plate conveying device, including medicine plate manipulator (2) and medicine plate conveying belt (1), medicine plate manipulator (2) is located the top of medicine plate conveying belt (1), medicine plate manipulator (2) includes main disc (3), grab component, drive arrangement and conductive device, drive arrangement includes main drive motor (4) and sub drive motor (10), the output of main drive motor (4) is connected with main disc (3), motor bracket (8) is installed on main disc (3), sub drive motor (10) is installed on motor bracket (8), the output of sub drive motor (10) is connected with grab component through main disc (3), grab component and sub drive motor (10) are electrically connected with conductive device, and the conductive device is used for conducting current, and medicine plate conveying belt (1) includes belt conveying device (22), limiting component and adjusting cylinder (15), limiting component is installed at the lower end of belt conveying device (22), adjusting cylinder (15) is installed at the upper end of belt conveying device (22), and the output of adjusting cylinder (15) is installed with pneumatic guardrail (16), and limiting component is used for the limiting of linear conveying.

6. A two-way drug version automatic merging device according to claim 5, characterized in that, ​